R. Lakshmi, and D. G. Sindhu. “K- Kernels in Digraphs Formed by Some Operations from Other Digraphs”. Jordan Journal of Mathematics and Statistics 13, no. 4 (May 18, 2025): 585–599. Accessed June 29, 2025. https://jjms.yu.edu.jo/index.php/jjms/article/view/834.